edited by Harold C. Gardiner
Devin-Adair Co., 1949
Buku Teks
edited by Michael W. Alssid, William Kenney
Holt, Rinehart and Winston, 1964
Buku Teks
Campbell, Oscar James, author
Crofts, 1947
Buku Teks
Johns, Anthony Hearly, author
Australian National University Press , 1979
Buku Teks
Huxley, Aldous
J.M. Dent, 1942
Buku Teks